body{ background-color: #fafafa;}
.clearfix:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}
.center-main{width: 1200px;}
.main{
	width: 920px;
	float: right;
	margin: 20px auto;
	padding-bottom: 20px;
	background: #fff;
	box-shadow: 0px 0px 7px 0px rgba(25, 102, 255, 0.15);
	border-radius: 4px;
}
@media screen and (max-width:1200px){
    .center-main{ width: 920px;}
	.main{ width: 766px;}
}
.tit{
	padding: 0 20px;
	width: 100%;
	height: 90px;
	line-height: 90px;
	box-shadow: 0px 2px 0px 0px #DADEE8;
	border-radius: 4px;
	box-sizing: border-box;
}
.tit span{
	margin-top: -1px;
	padding: 0 20px;
	display:inline-block;
	font-size: 20px;
	font-weight: bold;
	color: #808080;
	cursor: pointer;
	margin-right: 10px;
}
.tit span.on{
	color: #1966FF;
	border-bottom: 3px solid #1966ff
}

.item-wrap{ margin: 0 20px;}
.item{ position: relative; padding: 15px 0 15px 50px; border-bottom: 1px solid #DADEE8; background: url(../img/materials_icon01.png) left center no-repeat;}
.item a{ float:right; width: 72px; height: 28px; line-height:28px; text-align: center; background: #1966FF; border-radius: 14px; font-size: 14px; color: #fff;}
.item h2{ padding-left: 35px; font-size:16px; color: #333; font-weight: 400; background: url(../img/materials_icon02.png) left center no-repeat;}
.item p{ margin-top: 5px; font-size:12px; color: #333;}
.item p span{ margin-left: 20px; font-size:12px; color: #9598A2;}
.tips{ margin-top: 20px; line-height: 30px; text-align: center; font-size:16px; color: #9598A2;}
.tips a{ color: #9598A2;}
